根据关键字查询

(1) changgou_service_search项目创建SearchService接口

public interface SearchService {
    /**
     * 全文检索
     * @param paramMap  查询参数
     * @return
     */
    public Map search(Map<String, String> paramMap) throws Exception;
}

(2) changgou_service_search项目创建SearchService接口实现类SearchServiceImpl

@Service
public class SearchServiceImpl implements SearchService {

    @Autowired
    private ElasticsearchTemplate esTemplate;
    //设置每页查询条数据
    public final static Integer PAGE_SIZE = 20;
    @Override
    public Map search(Map<String, String> searchMap) throws Exception {
        Map<String, Object> resultMap = new HashMap<>();
        //有条件才查询Es
        if (null != searchMap) {
            //组合条件对象
            BoolQueryBuilder boolQuery = QueryBuilders.boolQuery();
            //0:关键词
            if (!StringUtils.isEmpty(searchMap.get("keywords"))) {
                boolQuery.must(QueryBuilders.matchQuery("name", searchMap.get("keywords")).operator(Operator.AND));
            }
            //4. 原生搜索实现类
            NativeSearchQueryBuilder nativeSearchQueryBuilder = new NativeSearchQueryBuilder();
            nativeSearchQueryBuilder.withQuery(boolQuery);
            //10: 执行查询, 返回结果对象
            AggregatedPage<SkuInfo> aggregatedPage = esTemplate.queryForPage(nativeSearchQueryBuilder.build(), SkuInfo.class, new SearchResultMapper() {
                @Override
                public <T> AggregatedPage<T> mapResults(SearchResponse searchResponse, Class<T> aClass, Pageable pageable) {

                    List<T> list = new ArrayList<>();

                    SearchHits hits = searchResponse.getHits();
                    if (null != hits) {
                        for (SearchHit hit : hits) {
                            SkuInfo skuInfo = JSON.parseObject(hit.getSourceAsString(), SkuInfo.class);

                            list.add((T) skuInfo);
                        }
                    }
                    return new AggregatedPageImpl<T>(list, pageable, hits.getTotalHits(), searchResponse.getAggregations());
                }
            });
            //11. 总条数
            resultMap.put("total", aggregatedPage.getTotalElements());
            //12. 总页数
            resultMap.put("totalPages", aggregatedPage.getTotalPages());
            //13. 查询结果集合
            resultMap.put("rows", aggregatedPage.getContent());
            return resultMap;
        }
        return null;
    }
}

(3) changgou_service_search项目创建SearchController

@RestController
@RequestMapping("/sku_search")
public class SearchController {
    @Autowired
    private EsManagerService esManagerService;
    @Autowired
    private SearchService searchService;
     //对搜索入参带有特殊符号进行处理
    public void handlerSearchMap(Map<String,String> searchMap){
        if(null != searchMap){
            Set<Map.Entry<String, String>> entries = searchMap.entrySet();
            for (Map.Entry<String, String> entry : entries) {
                if(entry.getKey().startsWith("spec_")){
                    searchMap.put(entry.getKey(),entry.getValue().replace("+","%2B"));
                }
            }
        }

    }
    /**
     * 全文检索
     * @return
     */
    @GetMapping
    public Map search(@RequestParam Map<String, String> paramMap) throws Exception {
        //特殊符号处理
        handlerSearchMap(searchMap);
        Map resultMap = searchService.search(paramMap);
        return resultMap;
    }
}